Electronic Arts is offering its popular online multiplayer game Battlefield 1942 for free to celebrate Battlefield series' 10th anniversary this fall. The only catch is that you'll have to install its Origin client in order to play it.

"When we launched Battlefield 1942 ten years ago, we had lofty ambitions to create a first-person shooter that would push the boundaries of innovation, creativity and design. We evolved the FPS gameplay formula by introducing the world to all-out warfare via land, air and sea," said Karl Magnus Troedsson, Vice President and General Manager of DICE. "Since the beginning, the reception to the Battlefield series has been incredible thanks to our amazing fans. Every day, we strive to provide our community with great games and new ways to play as evident with Battlefield 3 Premium. We wanted to thank our fans who have supported us throughout the years by restoring Battlefield 1942 for a digital re-release and give everyone a chance to play the game that started it all."

You can learn more about how to get a free copy of the game here. As EA says in its press release, "conditions apply" so read the fine print before you download it.